High-Efficiency Lead-Free Wide Band Gap Perovskite Solar Cells via Guanidinium Bromide Incorporation

2021 ◽  
Author(s):  
Mengmeng Chen ◽  
Muhammad Akmal Kamarudin ◽  
Ajay K. Baranwal ◽  
Gaurav Kapil ◽  
Teresa S. Ripolles ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Wide Band ◽  
Lead Free ◽  
Wide Band Gap

UV-Stable and Highly Efficient Perovskite Solar Cells by Employing Wide Band gap NaTaO3 as an Electron-Transporting Layer

2020 ◽  
Vol 12 (19) ◽  
pp. 21772-21778 ◽  
Author(s):  
Qing-Qing Ye ◽  
Meng Li ◽  
Xiao-Bo Shi ◽  
Ming-Peng Zhuo ◽  
Kai-Li Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Perovskite Solar Cells ◽  
Wide Band ◽  
Wide Band Gap ◽  
Highly Efficient ◽  
Electron Transporting Layer

scholarly journals Molecular Engineering Enhances the Charge Carriers Transport in Wide Band-Gap Polymer Donors Based Polymer Solar Cells

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4101
Author(s):  
Siyang Liu ◽  
Shuwang Yi ◽  
Peiling Qing ◽  
Weijun Li ◽  
Bin Gu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
High Efficiency ◽  
Polymer Solar Cells ◽  
Acid Methyl Ester ◽  
Wide Band ◽  
Molecular Engineering ◽  
Wide Band Gap ◽  
Photovoltaic Properties ◽  
Solvent Vapor

The novel and appropriate molecular design for polymer donors are playing an important role in realizing high-efficiency and high stable polymer solar cells (PSCs). In this work, four conjugated polymers (PIDT-O, PIDTT-O, PIDT-S and PIDTT-S) with indacenodithiophene (IDT) and indacenodithieno [3,2-b]thiophene (IDTT) as the donor units, and alkoxy-substituted benzoxadiazole and benzothiadiazole derivatives as the acceptor units have been designed and synthesized. Taking advantages of the molecular engineering on polymer backbones, these four polymers showed differently photophysical and photovoltaic properties. They exhibited wide optical bandgaps of 1.88, 1.87, 1.89 and 1.91 eV and quite impressive hole mobilities of 6.01 × 10−4, 7.72 × 10−4, 1.83 × 10−3, and 1.29 × 10−3 cm2 V−1 s−1 for PIDT-O, PIDTT-O, PIDT-S and PIDTT-S, respectively. Through the photovoltaic test via using PIDT-O, PIDTT-O, PIDT-S and PIDTT-S as donor materials and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) as acceptor materials, all the PSCs presented the high open circuit voltages (Vocs) over 0.85 V, whereas the PIDT-S and PIDTT-S based devices showed higher power conversion efficiencies (PCEs) of 5.09% and 4.43%, respectively. Interestingly, the solvent vapor annealing (SVA) treatment on active layers could improve the fill factors (FFs) extensively for these four polymers. For PIDT-S and PIDTT-S, the SVA process improved the FFs exceeding 71%, and ultimately the PCEs were increased to 6.05%, and 6.12%, respectively. Therefore, this kind of wide band-gap polymers are potentially candidates as efficient electron-donating materials for constructing high-performance PSCs.

Tailoring the Open-Circuit Voltage Deficit of Wide-Band-Gap Perovskite Solar Cells Using Alkyl Chain-Substituted Fullerene Derivatives

2018 ◽  
Vol 10 (26) ◽  
pp. 22074-22082 ◽  
Author(s):  
Dhruba B. Khadka ◽  
Yasuhiro Shirai ◽  
Masatoshi Yanagida ◽  
Takeshi Noda ◽  
Kenjiro Miyano
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Open Circuit Voltage ◽  
Alkyl Chain ◽  
Perovskite Solar Cells ◽  
Wide Band ◽  
Open Circuit ◽  
Wide Band Gap ◽  
Fullerene Derivatives

scholarly journals High-efficiency photovoltaic cells with wide optical band gap polymers based on fluorinated phenylene-alkoxybenzothiadiazole

2017 ◽  
Vol 10 (6) ◽  
pp. 1443-1455 ◽  
Author(s):  
Seo-Jin Ko ◽  
Quoc Viet Hoang ◽  
Chang Eun Song ◽  
Mohammad Afsar Uddin ◽  
Eunhee Lim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
High Performance ◽  
Optical Band Gap ◽  
High Efficiency ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Photovoltaic Cells ◽  
Wide Band ◽  
Wide Band Gap

A new series of wide band gap photovoltaic polymers based on a fluorinated phenylene-alkoxybenzothiadiazole unit with an optical band gap of over 1.90 eV are designed and utilized for high-performance single- and multi-junction bulk heterojunction polymer solar cells.

Suppressing the Phase Segregation with Potassium for Highly Efficient and Photostable Inverted Wide-Band Gap Halide Perovskite Solar Cells

2020 ◽  
Vol 12 (43) ◽  
pp. 48458-48466 ◽  
Author(s):  
Jiwei Liang ◽  
Cong Chen ◽  
Xuzhi Hu ◽  
Zhiliang Chen ◽  
Xiaolu Zheng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Perovskite Solar Cells ◽  
Phase Segregation ◽  
Wide Band ◽  
Wide Band Gap ◽  
Highly Efficient ◽  
Halide Perovskite

Self-assembled Nanometer-Scale ZnS Structure at the CZTS/ZnCdS Heterointerface for High-Efficiency Wide Band Gap Cu2ZnSnS4 Solar Cells

2018 ◽  
Vol 30 (12) ◽  
pp. 4008-4016 ◽  
Author(s):  
Kaiwen Sun ◽  
Jialiang Huang ◽  
Chang Yan ◽  
Aobo Pu ◽  
Fangyang Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
High Efficiency ◽  
Wide Band ◽  
Nanometer Scale ◽  
Wide Band Gap ◽  
Self Assembled

Origin of Open Circuit Voltage in wide band gap absorbers of all inorganic Cesium Perovskite Solar Cells

2017 ◽  
Author(s):  
Teresa S. Ripolles ◽  
Chi Huey Ng ◽  
Kengo Hamada ◽  
Siow Hwa Teo ◽  
Hong Ngee Lim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Wide Band ◽  
Open Circuit ◽  
Wide Band Gap
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